Photonsters PTC Heater Unit for Elegoo Mars2 pro (Nirvanworks version): Pre-Supported

thingiverse

Nirvanworks created a very nice modification to Photonsters original PTC Heater for resin printers that fits within an Elegoo Mars 2 Pro by utilizing the charcoal filter fan holes as mounting points instead of relying on small, rather weak magnets to hold up the heater unit. Unfortunately, if you want to print them in resin, you have to support the files yourself (or use auto-supports and pray to the 3D-Printing Gods that it all works out - which usually results in multiple failed prints). So, I decided to pre-support them as good as I know how and do some test prints, making tweaks until I have them printing reliably, and then share those files with anyone else that would like to print this heater case. If the part in the files is not supported, it was printed flat on the build plate without supports. I was concerned about the possibility of liquid resin dripping from the build plate and getting sucked into the fan, so I made a basic fan shroud/filter that attaches to the front of the heater fan using 5mmx2mm magnets. These are the perfect size to snap the shroud to the screws that hold the fan on. The filter was made by cutting out a suitable sized piece of fabric from a surgical mask (most people have a few of those around these days), you can use old disposed masks to make the filter if you don't want to waste a new one. I glued the fabric to the shroud with CA glue, but if you don't want to have to reprint the shroud to change the filter, you could use magnets to hold the cloth in place. I used somewhat conservative print speeds, so If you try printing and something isn't working for you, either slow down the lift speed, or up the cure times a bit. Also, I'm including Lychee files so that you can change the supports if you wish. I got good prints from these supports, but I know every printer and resin is a little different, so expect to have to do some tuning to get good results. Enjoy! :)